HI5521-02 Laboratory Research Grade Benchtop pH/mV and EC/TDS/Salinity/Resistivity Meter

R 22,690.00 *

Prices excluded VAT and delivery costs

Delivery time approx. 2 to 4 weeks

  • HI5521-02
  The HI5521 is an advanced research grade benchtop pH/mV/EC/TDS/Salinity/Resistivity... more
Product information "HI5521-02 Laboratory Research Grade Benchtop pH/mV and EC/TDS/Salinity/Resistivity Meter"

 The HI5521 is an advanced research grade benchtop pH/mV/EC/TDS/Salinity/Resistivity meter that is completely customizable with a large color LCD, capacitive touch keys, and USB port for computer connectivity. The HI5521 is rich in features including data logging, alarm limits, comprehensive GLP, and many more while retaining simplicity in use with both dedicated key for routine operation and virtual keys that guide the user through setup options. The HI5521 ensures confidence in pH measurements with the exclusive Hanna Instruments CAL Check™ feature that alerts the user to potential problems during calibration including if the buffer is contaminated or the probe needs to be cleaned.

  • Capacitive Touch Keypad
  • Two independent channels


  • CAL Check™


 a PC with USB cable and HI92000 software (both sold separately).

Contextual Help – Contextual help is always available through a dedicated “HELP” key. Clear tutorial messages and directions are available on-screen to quickly and easily guide users through setup and calibration.  The help information displayed is relative to the setting/option being viewed.

CAL check

CAL Check alert to potential problems during calibration


Comprehensive GLP Data


Real time logging



pH Specifications

pH Range -2.000 to 20.000 pH
pH Resolution 0.1, 0.01, 0.001 pH
pH Accuracy (@25ºC/77ºF) ±0.1 pH, ±0.01 pH, ±0.002 pH ±1 LSD
pH Calibration automatic, up to five point calibration, eight standard buffers available (1.68, 3.00, 4.01, 6.86, 7.01, 9.18, 10.01,12.45) and five custom buffers
pH Temperature Compensation automatic or manual from -20.0 to 120.0 °C
mV Range ±2000 mV
mV Resolution 0.1 mV
mV Accuracy ±0.2 mV ±1 LSD
Relative mV Offset Range ±2000 mV

EC Specifications

EC Range 0.000 to 9.999 ?S/cm, 10.00 to 99.99 ?S/cm, 100.0 to 999.9 ?S/cm, 1.000 to 9.999 mS/cm, 10.00 to 99.99 mS/cm, 100.0 to 1000.0 mS/cm actual EC*
EC Resolution 0.001 ?S/cm, 0.01 ?S/cm, 0.1 ?S/cm, 1 ?S/cm, 0.001 mS/cm, 0.01 mS/cm, 0.1 mS/cm
EC Accuracy (@25ºC/77ºF) ±1% of reading (±0.01 ?S/cm)
EC Calibration automatic standard recognition (0.000 ?S/cm, 84.00 ?S/cm, 1.413 mS/cm, 5.000 mS/cm, 12.88 mS/cm, 80.00 mS/cm, 111.8 mS/cm) or user standard; single point or multi-point calibration

TDS Specifications

TDS Range 0.000 to 9.999 ppm, 10.00 to 99.99 ppm, 100.0 to 999.9 ppm, 1.000 to 9.999 ppt, 10.00 to 99.99 ppt, 100.0 to 400.0 ppt actual TDS* (with 1.00 factor)
TDS Resolution 0.001 ppm, 0.01 ppm, 0.1 ppm, 1 ppm, 0.001 ppt, 0.01 ppt, 0.1 ppt
TDS Accuracy (@25ºC/77ºF) ±1% of reading (±0.01 ppm)

Resistivity Specifications

Resistivity Range 1.0 to 99.9 ?•cm; 100 to 999 ?•cm; 1.00 to 9.99 K?•cm; 10.0 to 99.9 K?•cm; 100 to 999 K?•cm; 1.00 to 9.99 M?•cm; 10.0 to 100.0 M?•cm
Resistivity Resolution 0.1 ?•cm; 1 ?•cm; 0.01 K?•cm; 0.1 K?•cm; 1 K?•cm; 0.01 M?•cm; 0.1 M?•cm*
Resistivity Accuracy ±2% of reading (±1 ?•cm)

Salinity Specifications

Salinity Range practical scale: 0.00 to 42.00 psu; natural seawater scale: 0.00 to 80.00 ppt; percent scale: 0.0 to 400.0%
Salinity Resolution 0.01 for practical scale/natural seawater scale; 0.1% for percent scale
Salinity Accuracy (@25ºC/77ºF) ±1% of reading
Salinity Calibration percent scale—one-point (with HI7037 standard)

Temperature Specifications

Temperature Range -20.0 to 120.0 ºC**; -4.0 to 248.0 ºF**; 253.15 to 393.15 K**
Temperature Resolution 0.1 °C, 0.1 °F, 0.1 K
Temperature Accuracy ±0.2 °C; ±0.4 °F; ±0.2 K (without probe)
Temperature Compensation disabled, linear and non-linear (natural water)
Temperature Coefficient 0.00 to 10.00 %/°C
Reference Temperature 5.0 to 30.0 °C

Additional Specifications

Cell Constant 0.0500 to 200.00
Cell Type 4 cells
Electrode/Probe HI1131B glass body pH electrode with BNC connector and 1 m (3.3’) cable (included); HI76312 platinum, four-ring EC/TDS probe with and 1 m (3.3’) cable (included)
Temperature Probe HI7662-T stainless steel temperature probe with 1 m (3.3’) cable (included)
Profiles up to 10, 5 each channel
USP ?645? Compliant yes
GLP calibration data including date, time, buffers used, offset and slope for pH. Cell constant, reference temperature, temperature coefficient, calibration points, calibration time stamp, probe offset for conductivity
Logging record: 100,000 data point storage, up to 100 lots with max. 50,000 records/lot; interval: settable between 1 second and max log time of 180 minutes; type: automatic, manual, AutoHOLD; additional: 200 records USP
Input Channels 1 pH/ORP + 1 EC/TDS/Salinity/Resistivity
Display color graphic LCD with on-screen help, graphing, and custom color configuration
Connectivity USB
Environment 0 to 50°C (32 to 122°F; 273 to 323 K), RH max 95% non-condensing
Power Supply 12 VDC adapter (included)
Dimensions 160 x 231 x 94 mm (6.3 x 9.1 x 3.7”)
Weight 1.2 kg (2.64 lbs.)
Ordering Information HI5521 is supplied with HI1131 pH electrode, HI7662-T temperature probe, HI76312 conductivity probe, HI76404W electrode holder, HI70004 pH 4.01 buffer solution sachet, HI70007 pH 7.01 buffer solution sachet, HI700601 electrode cleaning solution sachet (2), HI7082 3.5M KCl electrolyte solution (30 mL), 12 VDC power adapter and instructions.
Warranty 2 years (probe 6 months)
Notes *Uncompensated conductivity (or TDS) is the conductivity (or TDS) value without temperature compensation. **Reduced to actual probe limits








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